Fix anchor link on events (#49)

Author: SRWieZ

Diff for: app/Http/Controllers/ShowDocumentationController.php

@@ -192,7 +192,7 @@ protected function extractTableOfContents(string $document): array
                 return [
                     'level' => strlen(trim(Str::before($line, '# '))) + 1,
                     'title' => $title = trim(Str::after($line, '# ')),
-                    'anchor' => Str::slug($title),
+                    'anchor' => Str::slug(Str::replace('`', 'code', $title)),
                 ];
             })
             ->toArray();